CN104223621A - Coin medal - Google Patents

Coin medal Download PDF

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Publication number
CN104223621A
CN104223621A CN201310247559.XA CN201310247559A CN104223621A CN 104223621 A CN104223621 A CN 104223621A CN 201310247559 A CN201310247559 A CN 201310247559A CN 104223621 A CN104223621 A CN 104223621A
Authority
CN
China
Prior art keywords
coin
coating
layer
refractive index
chapter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201310247559.XA
Other languages
Chinese (zh)
Inventor
张宝利
孙凯
张巍巍
朱军
王晓利
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Banknote Printing and Minting Corp
Zhongchao Special Security Technology Co Ltd
Original Assignee
China Banknote Printing and Minting Corp
Zhongchao Special Security Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Banknote Printing and Minting Corp, Zhongchao Special Security Technology Co Ltd filed Critical China Banknote Printing and Minting Corp
Priority to CN201310247559.XA priority Critical patent/CN104223621A/en
Publication of CN104223621A publication Critical patent/CN104223621A/en
Pending legal-status Critical Current

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Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03HHOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/0005Adaptation of holography to specific applications
    • G03H1/0011Adaptation of holography to specific applications for security or authentication
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03HHOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H2270/00Substrate bearing the hologram
    • G03H2270/10Composition
    • G03H2270/13Metallic

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  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Credit Cards Or The Like (AREA)

Abstract

The invention aims to provide a coin medal. The coin medal has the anti-fake characteristic that the color is changed along with light so that the anti-fake ability of the coin medal is improved. The coin medal provided by the invention comprises a coin medal matrix and a plating layer covering at least one part of the surface of the coin medal matrix, wherein the coin medal matrix is matched with the plating layer so that the coin medal has the characteristic that the color is changed along with light.

Description

A kind of coin chapter
Technical field
The present invention relates to anti-counterfeit field, particularly relate to a kind of coin chapter.
Background technology
At present, the Techniques of Optical Security be applied on the coin chapters such as coin, commemorative coin, souvenir badge has a variety of, the technology such as such as stealthy engraving, hologram image, colour.
Stealthy engraving is the technology of carrying out multiple engraving at coin chapter on the surface.Have employed the coin chapter of stealthy engraving technology, same engraving burr pattern can present the image of different content in different viewing angles, namely can see a kind of image from a certain angle, and when tilting or deflect sculptured surface, the picture drop-out presented before this also presents another kind of image.
Hologram image technology is the technology adopting the mould pressing process of coin chapter to form optical grating construction in its surface in coin chapter picture on surface generative process thus form rainbow holography feature.
Colour graphics art is fused in coinage technology red, yellow, blue, black four color inks to utilize special forme bat printing to the technology on coin chapter surface, substantially increases artistic appreciating effect and the anti-counterfeit capability of product.In addition, coin Zhang Benshen also can provide metallochrome, or applies coating by surface and realize color characteristic, but these color characteristics all come from metal base or coating material itself to the absorption of light and reflectivity properties.
But, along with people are to the raising of false proof requirement, need to continually develop new anti-counterfeiting technology to improve the anti-counterfeit capability of coin chapter.
Summary of the invention
The object of the present invention is to provide a kind of coin chapter, this coin chapter has color of light and becomes anti-counterfeiting characteristic, thus improves the anti-counterfeit capability of coin chapter.
The invention provides a kind of coin chapter, this coin chapter comprises coin Zhang Jicai and covers the coating on the surface at least partially of described coin Zhang Jicai, and described coin Zhang Jicai and described coating cooperatively interact to present color of light and becomes feature.
Because coin chapter according to the present invention is presented color of light become feature by cooperatively interacting of coin Zhang Jicai and coating, so coin chapter according to the present invention can obtain optical security features that is abundant, distinct characteristics, thus realize stronger anti-counterfeit capability, and also very strong according to the technological feasibility of coin chapter of the present invention.
In addition, compared with the flexible parent metal such as banknote, the packing of product, the rigid substrate of coin chapter can ensure that light becomes planarization and the uniformity of coating, thus is conducive to maintenance and expression that color of light in the process of circulation becomes feature.
Accompanying drawing explanation
Fig. 1 is the profile of the coin chapter according to one embodiment of the present invention;
Fig. 2 shows the profile containing card-cut coin chapter according to another embodiment of the present invention;
Fig. 3 shows the profile with the coin chapter of protective layer according to the another embodiment of the present invention; And
Fig. 4 (a), 4 (b), 4 (c) respectively illustrate the profile that the coating of employing three kinds of methods to coin chapter according to the present invention carries out patterning.
Detailed description of the invention
Describe in detail according to coin chapter of the present invention below in conjunction with accompanying drawing, to understand thought of the present invention better.Should be appreciated that described accompanying drawing and describe just description of the preferred embodiment of the present invention in detail, not limit the scope of the invention by any way.
As shown in Figure 1, according to the coating 3 that the coin chapter 1 of one embodiment of the present invention comprises coin Zhang Jicai 2 and covers on the surface at least partially of described coin Zhang Jicai 2, described coin Zhang Jicai 2 cooperatively interacts to present color of light with described coating 3 and becomes feature.
Preferably, coating 3 can provide separately color of light to become feature, or coating 3 also can cooperatively interact with coin Zhang Jicai 2 and provides color of light to become feature, and this is described further when being described the structure of coating 3 hereinafter.
Preferably, coating 3 can be interfere type multi-layer film structure, and this interfere type multi-layer film structure forms Fabry-pool sieve resonator, and it has selection index system to the white light of incidence, makes emergent ray only comprise some wave band, thus presents specific color; When incident angle changes, light path on the other side changes, and interfere wave band also to change, thus the color of presenting to observer in angle of emergence direction also changes thereupon, thus forms light change effect.
Described interfere type multi-layer film structure can comprise in following structure any one: (1) stacks gradually by absorbed layer, low refractive index dielectric layer and reflecting layer the coating formed, wherein this reflecting layer contacts with the surface of described coin Zhang Jicai 2, preferably, when coin Zhang Jicai 2 can provide the effect in reflecting layer, reflecting layer here can be omitted, this makes coin chapter according to the present invention possess unique process advantage, because need not consider between reflecting layer and coin Zhang Jicai in conjunction with firmness, thus be more conducive to the circulation of coin chapter; (2) stack gradually by high refractive index medium layer, low refractive index dielectric layer and high refractive index medium layer the coating formed; And (3) stack gradually by absorbed layer, high refractive index medium layer and reflecting layer the coating formed, wherein, this reflecting layer contacts with the surface of described coin Zhang Jicai 2, preferably, when coin Zhang Jicai 2 can provide the effect in reflecting layer, can omit reflecting layer here, this makes coin chapter according to the present invention possess unique process advantage, because need not consider between reflecting layer and coin Zhang Jicai in conjunction with firmness, thus be more conducive to the circulation of coin chapter.Preferably, the material in above-mentioned reflecting layer can for having the material of high reflectance, as gold, silver, copper, aluminium, zinc, nickel, titanium etc. and their alloy; The material requirements of above-mentioned absorbed layer is the close material of its refractive index and absorptivity, and can be such as semi-metallic (as silicon, germanium etc.), also can be metal material or its alloy (as chromium, copper, nickel, nichrome etc.); The refractive index of above-mentioned low refractive index dielectric layer is less than 1.7, such as, can be magnesium fluoride, silica, ice crystal etc.; The refractive index of above-mentioned high refractive index medium layer is more than or equal to 1.7, such as, can be ZnS, TiN, TiO 2, TiO, Ti 2o 3, Ti 3o 5, Ta 2o 5, Nb 2o 5, CeO 2, Bi 2o 3, Cr 2o 3, Fe 2o 3, HfO 2, ZnO etc.
When preparing according to coin chapter 1 of the present invention, the method that coating 3 can pass through the physics such as thermal evaporation, electron beam evaporation, magnetron sputtering or chemical vapour deposition (CVD) obtains, and preferably cover with the surperficial similar shape of coin Zhang Jicai 2, the i.e. surface topography similar shape of its pattern and coin Zhang Jicai 2, thus ensure that the sense of touch of coin chapter 1.
Preferably, as shown in Figure 2, the surface its of coin Zhang Jicai 2 being coated with coating 3 can be formed with embossment 4 and coating 3 covers on embossment 4, this embossment 4 is macroscopic relief, usually can by touching impression.One skilled in the art will appreciate that except the coin chapter substrate surface it being coated with coating 3, the surface of other parts of coin Zhang Jicai 2 also can be formed with embossment 4, and coating 3 is preferred and embossment 4 similar shape covers.Described embossment 4 provides embossing pattern or the character features of macroscopic view, and it can be realized by the mould punching technique of coin chapter.Described embossment 4 can play the effect of shape modulation to the coating 3 formed in its surface, be equivalent to the viewing angle of having modulated observer, because the color of coating 3 changes along with the change of viewing angle, therefore the existence of embossment 4 can provide more optical security features for coin chapter 1.Below in conjunction with Fig. 2, exemplary description is carried out to the effect of embossment 4.In fig. 2, coin Zhang Jicai 2 is alumin(i)um zinc alloy, the surface of coin Zhang Jicai 2 forms embossment 4 by the Sheet Metal Forming Technology of coin chapter, utilizes vacuum coating equipment on embossment 4, form the SiO that thickness is 430nm successively 2with the Cr layer that thickness is 5nm, like this under diffuse scattering standard sources during actual observation, will at position 6 right-angle view to carmetta, oblique view, to green, will present green when right-angle view for position 5 and 7.Therefore, in actual design with in producing, can as required, the embossment 4 that the Sheet Metal Forming Technology making full use of coin chapter is formed, the modulation of compartmentalization ground has the distribution of color with viewing angle that color of light becomes the coating 3 of feature, thus realizes the anti-counterfeiting characteristic of abundant bright characteristic.
Preferably, the surface its of described coin Zhang Jicai 2 being coated with coating 3 can be formed with holographic grating and coating 3 covers on holographic grating; Certainly when coin Zhang Jicai 2 its on be coated with coating 3 surface on defined embossment 4, this holographic grating can also be formed on embossment 4 and after on this holographic grating, form coating 3.The periodic regime of described holographic grating can be 0.5 μm ~ 5 μm, gash depth scope can be 0.03 μm ~ 0.8 μm, flute profile can be rectangle, sinusoidal pattern, zigzag or other similar shape and their combination.Holographic grating structure can provide diffraction pattern, and it combines with coating 3, can form abundanter optical security features.
Preferably, the surface its of described coin Zhang Jicai 2 being coated with coating 3 can be formed with sub-wave length grating and coating 3 covers on this sub-wave length grating; Certainly when coin Zhang Jicai 2 its on be coated with coating 3 surface on defined embossment 4, this sub-wave length grating can also be formed on embossment 4 and after on this sub-wave length grating, form coating 3.The periodic regime of described sub-wave length grating can be 0.2 μm ~ 0.5 μm, and sub-wave length grating is modulated coating 3, forms the optical signature be different from without sub-wave length grating region.Such as, the one dimension rectangular raster that sub-wave length grating is the cycle is 320nm, groove depth is 120nm, coating 3 is three layers of coating structure, and namely the thickness of reflecting layer Al is 60nm, dielectric layer TiO 2thickness be 150nm, the thickness of absorbed layer Cr is 4nm, be then green when direction of observation is vertical with grating orientation, be golden yellow time half-twist (namely direction of observation and grating orientation are in same plane) in own layer, and through polariscope observation playback light, there is obvious polarizability.For another example, be two-dimension grating according to the sub-wave length grating in coin chapter 1 of the present invention, its cycle is 0.35 μm, the degree of depth is 0.15 μm; Coating 3 is Al/MgF 2/ Cr structure, wherein Al layer thickness is 30nm, MgF 2thickness is 400nm, Cr thickness is 5nm, then have coating 3 in the region of sub-wave length grating and present redness, in the region not having sub-wave length grating, coating 3 presents gold.
In addition, the surface its of described coin Zhang Jicai 2 being coated with coating 3 can be formed with any one or its combination in above-mentioned holographic grating, sub-wave length grating, and the holographic grating formed, sub-wave length grating are preferably covered by coating 3 similar shape.
In addition, Fig. 3 show in order to increase service life according to coin chapter 1 of the present invention and on the coating 3 of coin chapter 1 armor coated 8 embodiment.Wherein, UV curing materials can be applied as protective layer 8 on the surface of coating 3, then utilize UV light source to carry out protective layer 8 irradiating the protective layer forming solidification.Described protective layer 8 should be at least that local is translucent, thus ensures that the color of light according to coin chapter 1 of the present invention becomes the impact of the not protected layer 8 of feature.Such as, and described protective layer 8 only can protect surface, a upper surface of coin chapter 1, can certainly protect the multiple of coin chapter 1 or all surfaces.Described protective layer 8 can also such as be obtained by methods such as printing, evaporation, sputterings.Preferably, the pattern of described protective layer 8 is identical with the surface topography of coating 3, thus ensure that the sense of touch of coin chapter 1.
Preferably, can be formed with pierced pattern in coating 3, wherein said pierced pattern can be macroscopic pattern, micro-word, meticulous lines etc., thus can realize better antifalse effect.
The method forming pierced pattern has multiple, and Fig. 4 (a) to Fig. 4 (c) several coating 3 to coin chapter 1 shown wherein carries out the embodiment of patterning.As shown in Fig. 4 (a), before formation coating 3, the surface of coin Zhang Jicai 2 adopts such as be coated with, the mode such as printing forms coating 9, this coating 9 can be typically water soluble starch type coating, the surface typically as deionized water or other solvent soaking coating 3 is utilized after form coating 3 in coating 9, the coating 3 of coating 9 region is come off, thus realizes the patterning to coating 3.Another method is as shown in Fig. 4 (b); after formation coating 3; the surface of coating 3 adopts such as be coated with, the mode such as printing forms coating 10; this coating 10 can be typically alkaline-resisting cellulose family coating; then the surface typically as heat alkali liquid or other solvent soaking coating 3 can be utilized; the coating 3 of coating 10 region is made to obtain the protection of coating 10; and other region soluble of coating 3 in described solvent or with described solvent generation chemical reaction and coming off, thus realize the patterning to coating 3.Also has a kind of method as shown in Fig. 4 (c), before formation coating 3, the mask 11 of coverage diagram patterning above coin Zhang Jicai 2, described mask 11 can be fitted on the surface of described coin Zhang Jicai 2, also can and the surface of coin Zhang Jicai 2 between have certain distance, the material of mask 11 can be selected arbitrarily (such as adopt but be not limited to metal A l under can playing the prerequisite of the effect of blocking to the formation of coating 3, Ni, Fe, the materials such as Cu), then on mask 11, coating 3 is being formed, mask 11 is removed after coating 3 is formed, thus coating 3 cannot be formed in the region that mask 11 blocks, and the coating 3 of patterning is formed in mask 11 non-occluded area.
In addition, coin chapter 1 according to the present invention can also comprise be positioned at described coin Zhang Jicai 2 surface on, functional layer (not shown) on the surface of described coating 3, this functional layer has diffraction light change feature, micro-nano structure feature, printed patterns feature, partially metallised feature, fluorescent characteristics and for one or more features in machine-readable magnetic, optical, electrical, radiation characteristics.
Below some preferred embodiment of the present invention is only exemplarily described.But it will be understood by those skilled in the art that under the prerequisite not departing from design of the present invention and spirit, various equivalents or amendment can be made to the present invention, and the technical scheme so obtained also should belong to protection scope of the present invention.

Claims (13)

1. a coin chapter, this coin chapter comprises coin Zhang Jicai and covers the coating on the surface at least partially of described coin Zhang Jicai, and described coin Zhang Jicai and described coating cooperatively interact to present color of light and becomes feature.
2. coin chapter according to claim 1, wherein, described the described of coin Zhang Jicai is formed with embossment at least partially on the surface.
3. coin chapter according to claim 2, wherein, described coating and described embossment similar shape cover.
4. coin chapter according to claim 2, wherein, described embossment is formed in holographic grating, sub-wave length grating any one or its combination.
5. coin chapter according to claim 1, wherein, described coin Zhang Jicai described is formed with any one or its combination in holographic grating, sub-wave length grating at least partially on the surface.
6. the coin chapter according to claim 4 or 5, wherein, described coating and described holographic grating, described sub-wave length grating similar shape cover.
7. coin chapter according to claim 1, wherein, is formed with pierced pattern in described coating.
8. the coin chapter any one of claim 1 to 5 or 7 described in claim, wherein, described coating is interfere type multi-layer film structure.
9. coin chapter according to claim 8, wherein, described interfere type multi-layer film structure comprise in following structure any one:
Stack gradually by absorbed layer, low refractive index dielectric layer and reflecting layer the coating formed, wherein this reflecting layer contacts with the surface of described coin Zhang Jicai;
The coating formed is stacked gradually by high refractive index medium layer, low refractive index dielectric layer and high refractive index medium layer; And
Stack gradually by absorbed layer, high refractive index medium layer and reflecting layer the coating formed, wherein, this reflecting layer contacts with the surface of described coin Zhang Jicai.
10. the coin chapter any one of claim 1 to 5 or 7 described in claim, wherein, described coin Zhang Jicai self has reflection function, described coating be in following coating any one or its combination:
Stack gradually by absorbed layer and low refractive index dielectric layer the coating formed, wherein this low refractive index dielectric layer contacts with the surface of described coin Zhang Jicai; And
Stack gradually by absorbed layer and high refractive index medium layer the coating formed, wherein, this high refractive index medium layer contacts with the surface of described coin Zhang Jicai.
11. coin chapters any one of claim 1 to 10 described in claim, wherein, described coating are coated with protective layer.
12. coin chapters according to claim 11, wherein, described protective layer and described coating similar shape cover.
13. coin chapters any one of claim 1 to 12 described in claim, wherein, the surface of described coin Zhang Jicai and/or the surface of described coating have diffraction light change feature, interference light become feature, micro-nano structure feature, print characteristics, partially metallised feature and for one or more features in machine-readable magnetic, optical, electrical, radiation characteristics.
CN201310247559.XA 2013-06-20 2013-06-20 Coin medal Pending CN104223621A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310247559.XA CN104223621A (en) 2013-06-20 2013-06-20 Coin medal

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Application Number Priority Date Filing Date Title
CN201310247559.XA CN104223621A (en) 2013-06-20 2013-06-20 Coin medal

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105249625A (en) * 2015-11-02 2016-01-20 苏州市金星工艺镀饰有限公司 Multi-color souvenir medal
CN106942855A (en) * 2017-03-30 2017-07-14 成都印钞有限公司 A kind of special-shaped Interface composites coin or chapter and its preparation technology

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050175815A1 (en) * 2002-07-17 2005-08-11 Heinrich Wild Optically variable element having a variable distance-layer thickness
CN102514443A (en) * 2011-12-09 2012-06-27 中钞特种防伪科技有限公司 Optical anti-counterfeiting element
CN102975568A (en) * 2012-05-30 2013-03-20 中钞特种防伪科技有限公司 Optical anti-fake component and products using the same and preparation method of optical anti-fake component
CN103050055A (en) * 2011-10-12 2013-04-17 中钞特种防伪科技有限公司 Optical variability anti-counterfeiting element
CN103358808A (en) * 2012-03-28 2013-10-23 中钞特种防伪科技有限公司 Optical anti-fake element and products utilizing same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050175815A1 (en) * 2002-07-17 2005-08-11 Heinrich Wild Optically variable element having a variable distance-layer thickness
CN103050055A (en) * 2011-10-12 2013-04-17 中钞特种防伪科技有限公司 Optical variability anti-counterfeiting element
CN102514443A (en) * 2011-12-09 2012-06-27 中钞特种防伪科技有限公司 Optical anti-counterfeiting element
CN103358808A (en) * 2012-03-28 2013-10-23 中钞特种防伪科技有限公司 Optical anti-fake element and products utilizing same
CN102975568A (en) * 2012-05-30 2013-03-20 中钞特种防伪科技有限公司 Optical anti-fake component and products using the same and preparation method of optical anti-fake component

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105249625A (en) * 2015-11-02 2016-01-20 苏州市金星工艺镀饰有限公司 Multi-color souvenir medal
CN106942855A (en) * 2017-03-30 2017-07-14 成都印钞有限公司 A kind of special-shaped Interface composites coin or chapter and its preparation technology

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Application publication date: 20141224

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